earth environmental - Google News
Earth's greatest killer finally caught, thanks to geology gumshoes - NBCNews.com
Earth's greatest killer finally caught, thanks to geology gumshoes NBCNews.com SAN FRANCISCO — Geology is partly detective work, and scientists now have enough evidence to book a suspect in the biggest environmental catastrophe in Earth's history. Painstaking analysis of rocks from China and Russia prove the culprit is a series ... |